209924 (2005 WS55)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4534675454 ± 1.91e-08
Semi-major axis (a)2.0295309131 AU ± 4.25e-09
Inclination (i)23.76631359° ± 2.80e-06
Long. of Asc. Node (Ω)283.54353999° ± 4.74e-06
Arg. of Perihelion (ω)203.35135816° ± 6.20e-06
Mean Anomaly (M)272.76283895° ± 5.21e-06
Mean Motion (n)0.3408935390°/day ± 1.07e-09
Perihelion dist (q)1.10920451 AU ± 3.88e-08
Aphelion dist (Q)2.94985731 AU ± 3.92e-08
Orbital Period2.89130233 yr ± 9.08e-09
Physical Parameters
H (abs. magnitude)16.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.324″
Uncertainty0
Orbit TypeAmor
MOID0.148029 AU
Observations Used1135
Oppositions15
Arc Total2002-2025
First Observation Used2002-07-26
Last Observation Used2025-10-22
Observations (1160)
Date Type RA Dec Mag Band Observatory
2011-09-23 00:01:39 C 02 16 40.48 +56 36 50.9 c A24
2011-09-23 00:37:46 C 02 16 40.46 +56 37 19.5 c A24
2011-09-23 01:13:54 C 02 16 40.47 +56 37 47.7 c A24
2011-09-30 04:29:17 C 02 15 38.12 +58 47 37.5 o C60
2011-09-30 04:30:57 C 02 15 37.94 +58 47 39.0 o C60
2011-09-30 04:32:38 C 02 15 37.97 +58 47 39.8 o C60
2011-09-30 04:34:21 C 02 15 37.94 +58 47 41.6 o C60
2011-09-30 04:36:02 C 02 15 37.93 +58 47 42.5 o C60
2011-09-30 04:37:42 C 02 15 37.91 +58 47 43.8 o C60
2011-09-30 04:39:22 C 02 15 37.93 +58 47 45.3 o C60
2011-09-30 04:42:42 C 02 15 37.85 +58 47 47.4 o C60
2011-10-02 23:32:45 C 02 14 25.47 +59 35 39.1 c A24
2011-10-02 23:33:47 C 02 14 25.50 +59 35 39.8 c A24
2011-10-02 23:34:49 C 02 14 25.52 +59 35 39.5 c A24
2011-10-03 22:08:29 C 02 13 54.27 +59 51 20.1 c A24
2011-10-03 22:10:33 C 02 13 54.22 +59 51 21.3 c A24
2011-10-03 23:36:09 C 02 13 51.90 +59 52 21.2 c A24
2011-10-03 23:38:13 C 02 13 51.98 +59 52 23.9 c A24
2011-10-04 22:19:24 C 02 13 16.59 +60 07 51.5 c A24
2011-10-04 22:20:28 C 02 13 16.56 +60 07 52.7 c A24
2011-10-04 22:21:31 C 02 13 16.54 +60 07 53.5 c A24
2011-10-04 22:22:36 C 02 13 16.50 +60 07 54.1 c A24
2011-10-26 21:09:17 C 01 41 51.33 +64 15 09.2 u 089
2011-10-26 21:11:39 C 01 41 51.13 +64 15 09.2 u 089
2011-10-26 21:14:01 C 01 41 50.97 +64 15 10.0 u 089
2011-10-26 21:16:23 C 01 41 50.72 +64 15 10.4 u 089
2011-10-26 21:18:45 C 01 41 50.45 +64 15 10.6 u 089
2011-10-26 21:21:07 C 01 41 50.24 +64 15 11.0 u 089
2011-10-26 21:23:29 C 01 41 50.06 +64 15 11.2 u 089
2011-10-26 21:25:51 C 01 41 49.79 +64 15 12.3 u 089
2011-10-29 20:46:15 C 01 35 20.15 +64 24 23.8 u 089
2011-10-29 20:48:37 C 01 35 19.81 +64 24 23.8 u 089
2011-10-29 20:50:59 C 01 35 19.65 +64 24 24.2 u 089
2011-10-29 20:53:21 C 01 35 19.40 +64 24 24.6 u 089
2011-10-29 20:55:43 C 01 35 19.17 +64 24 24.3 u 089
2011-10-29 20:58:05 C 01 35 18.98 +64 24 25.0 u 089
2011-10-29 21:02:49 C 01 35 18.46 +64 24 24.9 u 089
2011-10-29 21:05:11 C 01 35 18.26 +64 24 25.1 u 089
2011-10-29 21:07:33 C 01 35 18.05 +64 24 25.5 u 089
2011-11-03 20:22:24 C 01 24 02.41 +64 22 17.9 u 089
2011-11-03 20:24:46 C 01 24 02.15 +64 22 18.0 u 089
2011-11-03 20:27:08 C 01 24 01.95 +64 22 17.5 u 089
2011-11-03 20:29:30 C 01 24 01.70 +64 22 17.6 u 089
2011-11-03 20:31:52 C 01 24 01.44 +64 22 17.2 u 089
2011-11-03 20:34:14 C 01 24 01.23 +64 22 16.8 u 089
2011-11-03 20:36:36 C 01 24 01.01 +64 22 16.4 u 089
2011-11-14 21:40:45 C 01 00 59.14 +62 52 43.1 u 160
2011-11-14 21:43:58 C 01 00 58.91 +62 52 40.6 u 160
2011-11-14 21:47:11 C 01 00 58.62 +62 52 39.2 u 160
2011-11-15 19:13:06 C 00 59 26.98 +62 40 08.8 u 160